Updates cs log for audio detect problem.

JitsiConference.js

         });
     }
 
-    this.statistics.sendDetectedAudioProblem(
-        new Error(JSON.stringify(errorContent)));
     // Prints JSON.stringify(errorContent) to be able to see all properties of
     // errorContent from torture
     logger.error("Audio problem detected. The audio is received but not played",
         errorContent);
+
+    delete errorContent.displayName;
+
+    this.statistics.sendDetectedAudioProblem(
+        new Error(JSON.stringify(errorContent)));
 };
 
 /**

modules/statistics/CallStats.js

  * @param {CallStats} cs callstats instance related to the error (optional)
  */
 CallStats.prototype.sendDetectedAudioProblem = _try_catch(function (e) {
-    CallStats._reportError.call(this, wrtcFuncNames.signalingError, e,
+    CallStats._reportError.call(this, wrtcFuncNames.applicationLog, e,
         this.peerconnection);
 });